CN103033850B - Trigger grating and the method for determining container position - Google Patents
Trigger grating and the method for determining container position Download PDFInfo
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- CN103033850B CN103033850B CN201210379905.5A CN201210379905A CN103033850B CN 103033850 B CN103033850 B CN 103033850B CN 201210379905 A CN201210379905 A CN 201210379905A CN 103033850 B CN103033850 B CN 103033850B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9036—Investigating the presence of flaws or contamination in a container or its contents using arrays of emitters or receivers
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Sorting Of Articles (AREA)
- Control Of Conveyors (AREA)
Abstract
Described in the invention is a triggering grating and the method for determining container position and/or checking collimation of the container on a transport path.Due to the fact that it is, the multiple shadow shields horizontal in different height set relative to transport path, it has the light source that can start independent of one another and is provided with a public shell, and one trigger element be used to according to the output signal of shadow shield produce control signal, by the way that different Container Types can be determined to triggering grating reprogramming, without making machinery adjustment to the triggering grating.
Description
Technical field
A kind of method the present invention relates to triggering grating and for determining container position.
Background technology
In order to manufacture and/or filling product is into container, it is continuous that these containers are typically transported to one on a conveyor
Separate processing station in product production line, such as conveyer belt.In order to determine the presence of container on a conveyor and/or position,
It can use, for example, triggering shadow shield.When a target is by the shadow shield, a trigger signal produces, thereby after signal activation one
One autotelic advance of continuous processing step and/or the container detected.It similarly can trigger a checkout procedure or can be true
Whether a fixed container is being conveyed with an appropriate posture, in particular vertical posture.
For example, from known to EP0801289A2 being a kind of horizontal light curtain, single shadow shield is provided with wherein, this
A little shadow shields are connected on behind another for one in the conveying direction, so that a container passes sequentially through these single shadings
Plate.The shadow shield is formed by light guide, and the light guide is provided by a public light source, and is distributed by acceptor unit.The screening
Tabula rasa detects at the height of the open area of all kinds container, to be dependably distinguished from moving behind at another
Container.It is limited to the measurement height specified and the measurement task then specified however, the disadvantage of this arrangement is it and refers to
Fixed Container Type.
From known to DE4305559A1 being a kind of vertical light curtain, wherein it is similar that the side of a conveyer belt is provided with one
Optical transmitting set by rows, there is corresponding receiver in the couple positioned opposite of conveyer belt.In addition set in the conveying direction
There is single shadow shield, it is arranged to one and is connected on behind another, to determine conveyer belt and to stand on the conveyer belt
Container transporting velocity.By the unlatching repeatedly of optical transmitting set, one is scanned by row by the container of the light curtain, to create
The appearance profile grid under a given travelling speed of the container.It is related to a kind of image formation method differentiated roughly with this, often
One shielded shadow shield section produces the picture point for assigning the container.By the way that these picture points are made comparisons with " study " image,
Different Container Types can be distinguished according to the profile of container.This method is disadvantageous in that, it is necessary to judges a plurality
The picture point of amount, result are that the speed of this method is restricted.In addition, container must be scanned with minimum spacing each other, thus
The performance of machinery is extraly restricted.
In addition, from safe practice, such as from known to DE10329881A1 and DE102005030829B4, vertical or inclination is perpendicular
Vertical grating, for example, it is in order to detect or distinguish target, for example distinguish the body of a motor car on conveyer belt and/or people.Therefore, light
The conveying direction of curtain towards a conveyer belt laterally deploys, and light source generally simultaneously one is connected on another in the level of multiple shadow shields
Operate to individual top, and if when objectionable optical attenuation level occurs in one or more shading plate levels, generate one
Control signal, for example, to cut off production system for security reason.Due to relatively slow in the case of this production process
Transporting velocity and monitoring target or people relatively large size, multiple shading plate levels can easily one be connected on another
The setting of side is simultaneously assessed jointly.
On the other hand, in filling system, the position of the container of different shape and size must be in relatively high conveying speed
Reliably identified under degree, so as to produce appropriate control signal for subsequent production stage.In order to monitor by type
The production of classification, for example, may be provided with Height Adjustable shadow shield, it is adjusted to be adapted to respective Container Type.Work as product
When having change, adjustment mechanism is then needed, the extra manpower consumption for thus causing to operate and maintaining.Further disadvantage is that behaviour
The uniquely limited repeatability that risk, the mechanical hysteresis effect due to adjustment mechanism and the mechanical wear for making to slip up are brought.
On the contrary, in the case of non-classified Product processing, multiple triggering shadow shields generally at various height are merged
Get up.Relatively large size and the then merging of necessary independent control due to single shading plate module, so side
It is necessarily restricted when monitoring a unassorted production line under formula.For example, shading plate module can not be with the neck regions with container
Required vertical resolution in domain one be connected on a top and set, this is for being especially important during test position
, to use sufficient reliability and the flexible position for determining different type container.
The content of the invention
Therefore, it is necessary to exist a kind of with reliability and flexible triggering grating and corresponding for recording container position
Method, in terms of different measurement tasks and Container Type, it exceedes current technological level.
The task of the setting solves with triggering grating as claimed in claim.This correspondingly includes setting along transport path
The multiple shadow shields horizontal in different height put, it has the light source that can start independent of one another and is accommodated in a public shell
It is interior.In this way, it may be provided with a compact grating with extra high vertical resolution grade.In addition, light source is activated individually
Ability allows selected different vertical shadow shield region, to solve the measurement task specified.For example, can be according to the type come in
Container shape and size, the neck area of a container is purposefully measured, to determine the container position in production procedure
Put.One sidewall areas of container similarly can be measured purposefully, to determine the maximum gauge of the container.From different height
Horizontal measurement signal similarly can be recorded and be compared to each other simultaneously, for example, to distinguish inappropriate inclination appearance of the container
State and appropriate vertical posture.
In addition it is provided with a trigger element that control signal is produced according to the output signal of shadow shield.Then specifically can be with
Produce the control signal for being assigned to autonomous container.Thus, for example, a subsequent inspection can be used to Container Type, the container can
Purposefully forward and/or the container can measure for a subsequent production stage, and it can be determined in production line
Position.
Shadow shield includes measuring beam, and it is aligned with being preferably parallel to one another.These light beams are preferably specified defeated relatively
The conveying direction of mechanism is sent laterally to walk.According to the ability being activated individually of light source, only some light sources need to operate, and only
The output signal for having the respective association of some shadow shields each operated needs evaluated, described some light sources and output to believe
Number it is used for a measurement task specified, for example, for being located in production line.In this way, touching compared to known structure
Luminous grid, wherein all shading plate levels start and their each output signal is all evaluated simultaneously, it can be surveyed faster
Measure data processing.The preferable joint of single shadow shield can be then realized in terms of a specific measurement task.For example,
A region in grating, wherein only needing a low vertical resolution horizontal, only it can start or every the 3rd every one second
Light source starts.
Trigger element is formed preferably for the processing individual output signals of selectivity, specifically only to handle those
The output signal for the shadow shield that its light source is activated.In this way, it may be adapted to for the processing time required for the output of trigger signal
Respective measurement task, specifically, the processing time are minimized.Specifically, the difference of triggering grating by group is started
The shadow shield of height region simultaneously reads and/or handled their output signal to group, can also solve multiple measurements simultaneously and appoint
Business.Therefore it can be adopted for the quantity of the required shadow shield of a measurement task and their resolution ratio with the flexibility of maximum possible
With without machinery adjustment.
In a particularly advantageous embodiment of the trigger element according to the present invention, the output letter of selected multiple shadow shields
Number can periodically it be assessed in measurement period together, each continues most to grow one millisecond, specifically to distribute at least one
Individual individual control signal is into each independent container.One control signal, for example, in the form of the triggering edge being adapted to, Ke Yisui
Exported afterwards in a millisecond of decay or the interruption of triggering grating.This allows the sufficiently high response speed for triggering grating,
In filling system under the transporting velocity of usual container.It is interpreted as the control signal for being assigned to independent container,
It is allow the subsequent production stage relevant with production line or checking step and/or it is purposeful forward or container is discharged
One control signal.The control signal can include the characteristic information relevant with the position of container and/or size, and/or with life
Produce the characteristic information of the relevant appropriate or inappropriate alignment on container of streamline.The control signal is, specifically,
The switching signal or trigger signal of one production unit or supply unit, for handling, checking and/or the filling of container.The control
Signal processed can be exported for a data signal and via a bus with real-time capacity, wherein the control signal can be one
Millisecond in be sent to respective destination address be used for start one act.
Each output signal of shadow shield can be converted to logically available measurement signal.One letter that logically can determine that
Number it is understood that for example, as the status signal or similar signal after output signal and threshold comparison, it is indicated whether
More than the permissible optical attenuation grade in the region of shadow shield.
The preferably made output signal combined with the shadow shield judged and/or logic merging is selected of trigger element, or with
Produce at least two control signals for being assigned to single container.The different measurements in single measurement can so be merged.For example,
First measurement can be made with the combination of the first shadow shield, the second measurement at the same time can be made with the second measurement shadow shield combination.Can
Judge and/or be compared independently of each other with the result combined to shadow shield.This is become it is possible that for example, passing through conjunction
And measurement result, perform an authenticity examination or obtain additional information.For example, by comparing container bottom region and container neck
The optical attenuation grade in region, it may be determined that a container whether in vertical posture or just with topple over or inclined posture convey.Together
It can simultaneously determine, the position of the container sample, especially with respect to the main shaft of container, and a feature can be determined simultaneously
Container dimensional, for example, maximum gauge.
By forming the combination of the shadow shield started, single measurement task can be merged in any form.According to
The measurement task solved is needed, the resolution capability that can also be combined to independent shadow shield is purposefully adapted to.In addition, in order to
One or more measurement tasks, triggering all shadow shields of grating can be used together, and trigger all shading plate levels of grating
The shadow shield that can be distributed into multiple combinations or only selected triggering grating can be combined in a manner of one is appropriate.Thus,
For the shadow shield number needed for a measurement task specified, and the next response time of triggering grating, it is minimized.
According in a specific beneficial embodiment of the triggering grating of the present invention, the distance between adjacent light source is up to
10mm, in particular maximum 5mm.Therefore, especially it is segmented in the container of key, for example, the neck area of reproduced food tank, example
Such as, can also be measured by the local resolution of abundance.By the merging of multiple shadow shields in a public shell, this especially into
For possibility.The public shell allows interlocking for an especially intensive independent shading plate level.In all cases, in the light of light source
Ultimate range is defined between mandrel.For example, suitable light source is LED.
Triggering grating preferably includes at least one reflector, with the measurement light launched backwards to the upset of public shell by light source
Beam.In this way, active element, such as light source and the light receiver of distribution, it can be accommodated in compact in a public shell.
This reduces the expense of wiring and the plug connection of correlation.In addition, because beam reversal, measuring beam can in the region of transportation section
To be conducted through measured zone twice.In this way, when passing through container with low beam attenuation, the measurement sensitivity of grating is triggered
And/or driving reliability can be improved.However, it is also possible to imagine, one kind arrangement, wherein light source are accommodated in the
In one public shell, and the light receiver assigned is accommodated in the second public shell.In this case it is also possible to light
Source and light receiver are arranged on the not homonymy of transport path, therefore measuring beam only passes through the measurement in the range of transport path
Region is once.
In shadow shield is assigned, if at least 5% of at least one corresponding optical attenuation in output signal, in particular extremely
Few 25%, trigger element can preferably be made into produce a control signal.This allows the detection of transparent medium.Because measure light
Beam enters container cavity wall and the critical transition each time from container cavity wall air inlet from air, and it is some to usually come at measuring beam
The decay of percentage, the measurement of transparent vessel can have high-grade reliability, particularly when multiple shadow shield horizontal combinations
When together.
Preferably light source is arranged to the conveying direction skew in container.For example, by allowing every a light source in the horizontal
Skew, improves the measurement resolution in vertical direction.Can also thus it imagine, the light source is arranged to, and is only set one for this
In the height region put, relative skew each other.
It is further to position with a kind of as claimed in claim container that is used for and/or check it according to the object of the invention
The method of collimation on transport path solves.Pass through the output signal of startup and the association of the selectivity of independent shadow shield
Judge can solve different measurement tasks, and/or by determining optical attenuation grade in the defined height region of transport path,
Specified measurement task can be adapted to different Container Types.The optical attenuation grade pair of measure with least one reduced value
Than, it is allowed to the generation of control signal, purposefully to control single container according to the contrast.Classification and it is non-classified defeated
In the case of sending, the control of product of flexibility allow for.Especially, it is no longer necessary to for handover measurement task and/or switching container
Type, and the machinery adjustment of different shading plate levels is made, to produce trigger signal.
It is preferable to rely on a transport box type and comes assigned altitute region.For example, for determining container position, for determining
Diameter and/or for check one correctly conveying direction（Particularly classify the situation of conveying）Measurement range, be suitable for each
Container Type, and excitation one trigger signal required for time can minimize.However, it is also possible to measure simultaneously multiple high
Region is spent, particularly in the case of non-classified, and an automatic inspection can be derived from the output signal of respective height region
Brake.For example, the contrast of the output signal that can be combined by multiple shadow shields and synchro measure identify a container.
Preferably compare and/or value that optical attenuation of the logical process at least two height regions is horizontal, to determine one
Container Type and/or differentiation one correctly convey direction and incorrect conveying direction.Different height areas can similarly be passed through
The contrast of the output valve in domain, perform authenticity examination.One correct conveying is oriented, for example, the situation that a container is vertical.Not just
True conveying is towards can be, for example, one topples over or one tilts the container posture erect.
The time point of interruption and the release of shadow shield measures preferably at least two height regions and calculated jointly, with
Just the position of a reference point of measure container, a plane of reference and/or main shaft.Even tilting the container area measurement of setting
In the case of, this still allows the positioning of the symmetry axis of container etc..For example, it can be inserted into the measurement result of time migration to improve
The accuracy of center triggering in the case where tilting the chamber wall erect.
In the one particularly advantageous improvement of the method according to the invention, multiple output signals point to multiple height areas by group
Domain judges that the optical attenuation in region at various height is horizontal to determine at least two of following container parameters to pass through：Highly, produce
The conveying posture for position, feature contour, peripheral diameter in product streamline and vertical/topple over.Multiple measurement tasks and/or
Complicated measurement task can be solved then in single measurement period.Opened by the way that the shadow shield of respective height region is autotelic
Dynamic, measurement signal can optimize for respective measurement task, can judge measurement signal within the especially short time, and can be
The trigger signal of one especially short time underexcitation association.
In addition preferably there is the displacement increment measured of feature according to corresponding transport path, produce control signal, it is special
Not one container position of corresponding measure and/or a container diameter.This allows a special rapid and flexible container typical case
The measure of parameter.
Brief description of the drawings
The preferred embodiments of the present invention are described below in conjunction with accompanying drawing：
Fig. 1 is the profile according to the first embodiment of the triggering grating of the present invention；
The top view of the shadow shield for the triggering grating that Fig. 2 is Fig. 1；
Fig. 3 is the longitudinal section by Fig. 1 triggering grating；
Fig. 4 is the longitudinal section according to the second embodiment of the triggering grating of the present invention；And
Fig. 5 is the profile according to the 3rd embodiment of the triggering grating of the present invention.
Embodiment
As shown in figure 1, according to the first embodiment 1 of the triggering grating of the present invention, including for obtaining the position P of container 2
And/or multiple shadow shield 5.1-5.10 of their collimations on transport path 3 are checked, it is arranged on relative to transport path 3
Different height level H, and each shadow shield includes light source 7.1-7.10.These light sources form the respective of shadow shield 5.1-5.10
Optical transmitting set and be accommodated in a public shell 9.
Light source 7.1-7.10 independent startup and can be connected to a trigger element 11, its output based on shadow shield 5.1-5.10
Signal A1-A10, for producing trigger signal TS, and hereinafter alleged control signal.
One continuous stream of container 2 moves on transport path 3, such as defeated along a conveyer belt of conveying direction 3 ' or rotation
Device is sent, in the example in fig 1, the direction being into drawing plane.Light source 7.1-7.10 substantially correspondingly relative conveyings
Direction 3 ' is horizontal, in particular orthogonal alignment.In the case of first embodiment 1, shadow shield 5.1-5.10 is former according to reflection
Reason running.One reflector 13 is correspondingly disposed in light source 7.1-7.10 opposite face, so as to reflect by light source 7.1-7.10 back to
The measuring beam 15.1-15.10 of the direction transmitting of shell 9, as a result these light beams pass through one measured zone of the top of transport path 3 ground
Twice.This is shown by the measuring beam 15.10 associated with shadow shield 5.10 of top with schematic diagram in fig. 2.
As shown in Figures 2 and 3, the light receiver 17.1-17.10 for distributing to light source 7.1-7.10 is arranged in shell 9.
These receivers are equally connected to trigger element 11, therefore arbitrarily selected output signal A1-A10 can be in public measurement week
Trigger element 11 is sent in phase.
In the example of Fig. 1 descriptions, in the case of the classification processing to the first Container Type 2.1, the only light of bottom
Source 7.1-7.6 starts and only light receiver 17.1-17.6 output signal is triggered, and unit 11 reads and assessed.On the contrary,
Top light source 7.7-7.10 is with the light receiver 17.7-17.10 associated positioned at the first Container Type 2.1 for needing measure record
The top of container 2 measured zone.It is then estimated there is no available signal section from top shadow shield 5.7-5.10 to record appearance
Device type 2.1.Only it is therefore preferred to selectively start by underlying light source 7.1-7.6.However, this is not precluded from more multiple light courcess
Optional startup.
In the case of the classification processing of second container type 2.2, for example, as shown in short dash line, only light source 7.1,
7.5th, 7.8 and 7.10 start and only related light receiver 17.1,17.5,17.8 and 17.10 is read.
In the case of unfiled processing, for example, all shadow shield 5.1-5.10 can be operated.According to the triggering light of the present invention
The advantages of grid 1, is, in fact, starting other joints with non-start up or reading shadow shield 5.1-5.10, as needed
And it is suitable, it has relatively high measurement resolution grade, without machinery adjustment.
For read and judge the promising output signal A1-A10 for judging required by task measurement period, for example, for 0.2
To 2ms.The particularly advantageous scope for being no more than 1ms.Within this whole cycle duration, the position P of one side autonomous container 2
It can also be measured by abundant accurate absolute change under fixed or usual in filling system transporting velocity relative to conveying
Path 3 determines.On the other hand, the one of light receiver 17.1-17.10 sufficient amount of output signal A1-A10 can also be together
Read and judged in the cycle duration.
For example, in preferable cycle duration, different measurement tasks can be by starting selected shadow shield 5.1-
5.10 it is performed in parallel.One measurement task specified can be completed similarly under the big accuracy of most probable, especially by spy
Not high measurement resolution.Single shadow shield 5.1-5.10 can be with for example, one after the other read, then in the whole of triggering grating 1
In individual cycle duration, for example, up to 128 shadow shield 5.1-5.10 can read and judge together.
Within the whole cycle duration no more than 1ms, preferably exportable one appropriate trigger signal TS, for example,
In the form of appropriate triggering edge.In this way, a subsequent production stage, such as, one moves forward, further processing or respective
The inspection of container 2, can independently it control.
The shadow shield 5.1-5.10 of independent startup output signal A1-A10, can be selected, together calculate and/or it is any
The logic of mode merges.Therefore, it is possible to purposefully from specially suitable height region H1 to the H3 export of triggering grating 1
One Trigger Function.It is envisaged that for example, a so-called measurement signal sequence, means once single shadow shield be present
The interruption of measuring beam, just produces trigger signal TS, and the shadow shield belongs to the shading that the measurement task specified for one is formed
Plate group, for example, the shadow shield 5.1 or 5.2 for measuring a bottom height region H1.
One further suitable signal link is so-called loop, wherein all measuring beams of a shadow shield group, example
Such as, minimum altitude region H1 shadow shield 5.1 and 5.2, it is necessary to interrupt to encourage a trigger signal TS.In this way, erroneous trigger
Possibility can reduce.Such loop, which can equally act as, reduces the interference from target, for example, can be stretched out from container 2
Target.Then, for example, measured zone in vertical direction is more than a shadow shield group 5.1-5.4 of maximum interference target
All measuring beam 15.1-15.4 in must have an interruption, for example, the jamming target can one expect to stretch
Label.In this way, spring bottle cap or suction pipe can similarly be detected and/or by from triggerings.For avoid mistake triggering, it is necessary in
Disconnected one specifies the measuring beam 15.1-15.4 of minimum number also to provide as defined in one in shadow shield 5.1-5.4 groups,
Such as height region H1 and H2 for instruction.
Subsequent light receiver 17.1-17.10 output signal A1-A10 processing preferably includes a logical combination, with
Just the measurement task that the risk of reduction erroneous trigger and/or completion are specified.For example, this can also be the appearance with asymmetrical section
The measure record of the rotation position of device.Such a example can be the unilateral handle openings in container（Do not show in figure
Show）, it is the same as compared with the container area that symmetrical profile is formed, meeting causes the optical attenuation for having feature in certain shading plate level.
The generation of at least two trigger signals of different height region H1-H3 from triggering grating 1, can also conduct
The replacement of an independent light receiver 17.1-17.10 output signal A1-A10 logical combination or supplement.If for example, can
One measurement task, and/or multiple independent triggers signals are permanently assigned to the certain shadow shield 5.1-5.10 for triggering grating 1
TS parallel processing is transferred to single trigger signal TS faster than multiple necessary output signal A1-A10, and this is favourable.Generally,
However, the use of the selectivity to single shadow shield 5.1-5.10, that is, the light source 7.1-7.10 associated selectivity
Start, and/or the reading of the output signal A1-A10 of the offers of the light receiver 17.1-17.10 by associating selectivity, it is allowed to
To the position P of container 2, size and/or the especially general measure in direction.Similarly, the different height regions of grating 1 are triggered
H1-H3 can be used for different measurement tasks.
One further possibility of single shadow shield 5.1-5.10 output signal A1-A10 logical combination is in Fig. 3
In point out.From diagram, container 2 is toppled in one, inappropriate to convey towards L1.In this case, for example, by means of
Include the first group of bottom shadow shield 5.1 and 5.2, the first public judgement knot can be derived from the output signal A1 and A2 of association
Fruit, and, by means of shadow shield 5.3-5.6 above, the second judgement knot can be derived from the output signal A3A6 of association
Fruit, its can be calculated together with the first result of determination or compared with.If for example, a related optical attenuation grade builds on the first judgement
As a result rather than the second result of determination, it can conclude that a container 2 toppled over.On the contrary, the container 2 conveyed under vertical posture is proper in one
When towards L2 in the case of, the first and second result of determination must determine a related optical attenuation grade.
In the case of unfiled conveying, as shown in figure 1, by means of two various sizes of containers 2.1 and container 2.2,
For example, all shadow shield 5.1-5.10 can start simultaneously and each of which can individually judge.For example, due in shadow shield 5.6
Top is recorded without the measure of the class of attenuation of correlation, and first kind container 2.1 can be identified, but such a class of attenuation
It has recorded by the measure of shadow shield 5.6.The container position P relevant with production line, for example, be based on only just it is shielded most
Top shadow shield 5.6 and determine record.
, in addition can be easily light receiver in order to determine the position P of a container in the production line of operation
At least one and transport path 3 displacement increment signal in the 17.1-17.10 output signal A1-A10 measured does ratio
Compared with, or calculate the output signal and the displacement increment signal.For example, trigger signal TS can be provided after a delay, so as to handle
Triggered time point is synchronous with the position of container main shaft 2 '.For example, this will allow to establish a discharge according to container main shaft 2 '
Function.This is particularly useful in the case of unfiled conveying.
Main shafts of the shadow shield 5.1-5.10 preferably with respect to conveying direction 3 ' and in appropriate container towards L2 container 2
The orthogonal alignment of line 2 '.However, the triggering grating 1 according to the present invention, it is not limited to such right angle alignment.In first embodiment
In the case of with reflective arrangement, as shown in FIG. 2, from beam path before reflection with the contrast after reflection, light source 7.1-
7.10 and light receiver 17.1-17.10's is arranged side by side, and necessarily leads to the measuring beam 15.1-15.10 of slight inclination.
Therefore continual measurement light is designated by the horizontal connecting line between light source and receiver in figs. 3 and 4
Beam.
The measured zone covered by shadow shield 5.1-5.10 preferably extending vertically with 100mm-500mm.This allows
Record determines most common a variety of Container Types.High measured zone is especially advantageous from 200mm to 400mm.In measurement light
Under all situations measured between beam 15.1-15.10 optical axis, the distance between adjacent shadow shield 5.1-5.10 is preferably not
More than 10mm, especially no more than 5mm.
Described shadow shield 5.1-5.10 number is only as an example.In principle, it is possible to selective startup is any
The shadow shield of quantity can be merged into the triggering grating according to the present invention.Especially it is possible that as requested, triggering grating can have
There are at least 16 or at least 32 light sources that can selectively start.In order to improve in different measured zone and/or container
Flexibility in terms of type, there is pressing at least 64, especially at least 128 light sources that can selectively start or shadow shield
Row arrangement arrangement is specially suitable.
Fig. 4 shows the second embodiment 21 of the triggering grating according to the present invention, and wherein light source 27.1-27.20 is arranged to,
Offset with one another in terms of the direction of conveying direction 3 '.So can be than advantageous, for example, the vertical resolution of the shadow shield when association
When should be less than arbitrary source 27.1-27.20 vertical dimension.As first embodiment, light receiver 28.1-28.20
Allocated correspondence serves as the light source of transmitter.
The 3rd embodiment 31 of the triggering grating according to the present invention, wherein light source 7.1-7.10 and light is shown in Fig. 5
Receiver 37.1-37.10 is arranged to relative to each other positioned at the different sides of transportation section 3.In principle, such as according to principle of reflection
First embodiment 1 as, the embodiment 31 can realize the advantages of same.But in the third embodiment, the measurement light of association
Beam 35.1-35.10 is less than via the optical attenuation of container 2, for example, first embodiment 1.Correspondingly first embodiment 1 is more suitable for having
There is the transparent container 2 of low-level optical attenuation.Furthermore, it is possible to realize a particularly compact structure.In order to apparent, in Fig. 2 to Fig. 5
Trigger element 11 is not described.
By described embodiment 1,21 and 31, also they are applied by it is any it is technically convenient in a manner of conjunction
And realize the following improvement more than state of the art.The unnecessary respective container dimensional determined as needed and to list
Only shadow shield carries out machinery adjustment.Alternatively, it is feasible according to the rigid attachment thing of the triggering grating of the present invention.This changes
It has been apt to the mechanical stability for triggering grating and the repeatability for improving independent measurement.Production between different vessels type is changed
Can faster and more flexibly it perform.After the conversion repeatedly of experience Container Type, the repeatability of independent measurement is still given.Due to
The mechanical wear that the transfer zone of different vessels type comes can avoid.Caused by the assembly of multiple light sources in one public shell
Wiring work amount can minimize.Its space requirement is than much smaller needed for the height regulation of machinery.Conveyer upper area
Interior wiring can be minimized similarly, and being consequently for the means that protection wiring is not cut off by glass can be simplified or avoided.It is logical
The EBI using traditional field is crossed, such as, CANopen, it is possible to achieve a variety of diagnostic functions and the study controlled by software
Pattern.One has real-time capacity and the bus of most 1ms delivery times especially suitable.Due to the output signal of single shadow shield
Or the possibility of the change of the logical combination of measurement result, the protection by the reliable trigger improved and to erroneous trigger,
The widest range of detectable detection container characteristic, also has local filth, and such.Light source in a public shell and
The assembly of light receiver simplifies cleaning and hygienic requirements is met.
According to the processing method of the triggering grating of the present invention, illustrated with first embodiment 1 to describe, the production for a classification
Product streamline：
The continual triggering grating 1 by transport path 3 of erected container 2 of Container Type 2.1.Shadow shield 5.1
Selectively start to 5.4 and 5.6.The light receiver 17.1-17.4 and 17.6 of association output signal is selective
Ground reads and is merged into following combination, for the judgement in trigger element 11.The shadow shield 5.1 and 5.2 of bottom forms first
Combination.Middle part shadow shield 5.3 and 5.4 forms the second combination.Shadow shield 5.7-5.10 is located at the upper area of container 2, therefore not
Need the measurement as container 2.Shadow shield 5.5 in container shoulder region in this example embodiment similarly need not and therefore not
Start.
The shadow shield 5.1 and 5.2 of bottom provides output signal A1 and A2, is present in determining container 2 on transport path 3,
But regardless of its direction on transport path 3.In other words, container 2 causes in the region of the shadow shield 5.1 and 5.2 of bottom
One related optical attenuation grade, regardless of whether it is vertical posture L2, inclined setting posture L3 or topples over posture L1.It can then make
Presence of the container 2 on transport path 3 is determined with least one in the output signal A1 and A2 of shadow shield 5.1 and 5.2.So
And, it is preferable that output signal A1 and A2 make common judgement, such as, it is desirable to shadow shield 5.1 and 5.2 must have been recorded positioned at one
Optical attenuation grade more than defined threshold.
The output signal A3 and A4 of middle part shadow shield 5.3 and 5.4 can be with for example, the measurements for container diameter.In addition this
A little output signals logically can merge with the output signal A1 and A2 of bottom shadow shield 5.1 and 5.2, to determine transport path 3
On container 2 direction.For example, by comparing and/or merging output signal A1, A2 and the second shading that the first shadow shield combines
Output signal A3, A4 of plate combination, can distinguish whether container 2 is conveyed just on transport path 3 with appropriate towards L2.Then
It can be combined with single shadow shield and be compared to each other, calculated jointly and/or logic in any way merges, can also be with
The measurement result of the shadow shield combination judged is compared to each other, calculate jointly and/or logic in any way merges.
The shadow shield 5.6 of the startup positioned at top of a upper height region H3 is covered, it is particularly suitable for determining
Container 2 as an absolute value or relative to product production line（Mean the position of container 2 of conveying direction 3 '）Position P.
For example, measure the time point that shadow shield interrupts and following measuring beam 15.6 discharges.The output signal of top shadow shield 5.6
Can also be calculated with other output signal A1-A4 or compared with, and/or its measurement that logically can be combined with other shadow shields
As a result merge.
The described judgement combined one by one preferably adapts to change by the control command of appropriate software grade
Working condition, so bring any height region H1-H3 of without machinery adjustment, corresponding triggering grating 1 application
A variety of possibilities.
In coherent multiple measurement period inner pressurd vessels 2 by period, the continued operation of grating 1 is triggered, in each measurement period,
The output signal A1-A10 that light source 7.1-7.10 selectively starts and associated is judged.In each measurement period,
One trigger signal TS of output decision is made whether, trigger signal TS is specified in respective container 2.
If for example, at least one threshold value more than optical attenuation grade in shadow shield 5.1-5.10, the triggering of output one
Signal TS.According to the measurement task type of trigger signal TS output foundations is formed, for example, determining container 2 in product production line
Position or verification container 2 on transport path 3 one appropriately towards L2, it is different for switching to encourage trigger signal TS
Production stage.For example, trigger signal TS can be a switching signal, for it is determined that the container 2 on transport path 3 is in not
Appropriate discharges it from product production line towards when L1, L3.Similarly trigger signal TS can be for start-up check or
Know the switching signal for starting subsequent production stage behind position of the container 2 in product production line.
At least one displacement that can be similarly with transport path 3 in shadow shield 5.1-5.10 output signal A1-A10 increases
The output signal for measuring encoder merges.In this way, trigger signal TS can be stimulated for the action of time delay.In other words,
The current location of container 2 can be not only determined, can also determine container 2 after segmentation is limited by the one of transport path 3 in advance
A Future Positions.Size in conveying direction 3 ' can similarly be specified in obmubing for single shadow shield 5.1-5.10 and continue
Time, for example, in order to determine the diameter of container 2.
Accordingly, it is particularly advantageous to which corresponding each container 2, separately measurement is at least two height region H1 to H3
Multiple time points of shadow shield 5.1-5.10 interruption and release, and the plurality of time point is compared to each other and/or calculated jointly.
For example, in the neck area of container 2, measurement as two can be performed parallel.If compare the interruption of shadow shield and release
Put, measure record has immediate movement, will may infer that in the presence of a bottom zone for tilting the neck area erect or a respective container 2
Domain tilts the vessel erect.For example, according to manufacturing tolerance and the conventional situation for triggering grating, this inclination can betide plastics
Container, it can interfere with being properly positioned for container main shaft 2 '.On the contrary, according to the present invention, container main shaft 2 ', or other are suitable
Reference point or the plane of reference, for example, the region of container bottom, its position and/or direction, even in the container or container for tilting setting
The situation of segmentation, it can still determine on vessel 2.In other words, the intentional center triggering of a tool, means relative to container 2
A symmetry axis, thus mode can correct.
In the situation that classification changes, the change of container dimensional, container shapes or container clarity is meant, can be passed through
The triggering reprogramming of grating 1 is selectively started and reads shadow shield 5.1-5.10.If for example, from small container class
Type 2.1, which changes, arrives bigger Container Type 2.2, can be by selectively starting the light source 7.7-7.10 of association and reading association
Light receiver 17.7-17.10 output signal A7-A10, start triggering grating 1 upper area extra shading
Plate 5.7-5.10.For the judgement of output signal computation rule and/or be related to independent output signal or by the defeated of group judgment
Go out the logical combination of signal, can use in any way herein.When (vessel) class changes, the machine to triggering grating 1,21,31
It is unnecessary that tool adjustment subsequently becomes.
In the situation of non-classified product production line, according to the independent measurement region of the triggering grating 1,21,31 of the present invention
Can selectively or jointly it judge, to identify or measure Container Type 2.1,2.2 and/or independently to encourage in addition respective
Container Type 2.1,2.2 appropriate trigger signal TS.
The technical characteristic of described embodiment 1,21,31 can by it is any it is technically convenient in a manner of be combined with each other.
Claims (18)
1. one kind is used to determine container position and/or checks the triggering grating of collimation of the container on transport path (3), it has
Have：
- multiple the shadow shields (5.1-5.10) in different height horizontal (H) set relative to transport path, wherein these shadings
Plate includes the light source being accommodated in the first public shell (9), and it can selective actuation and reading independent of one another；
- it is arranged at the light receiver (17.1-17.10) of the first public shell (9) or the second public shell, the light receiver
Device (17.1-17.10) distributes to light source, and
- one trigger element (11), it is used to produce control signal (TS) according to the output signal (A1-A10) of shadow shield, wherein touching
Bill member (11) is configured to single output signal (A1-A10) of the selectivity processing from light receiver (17.1-17.10),
Wherein described trigger element (11) is configured to regularly judge selected shadow shield (5.1-5.10) in measurement period
Output signal (A1-A10), each measurement period have 2ms maximum length in time, for reading and judging alternatively to be opened
All output signals (A1-A10) of dynamic shadow shield.
2. triggering grating according to claim 1, wherein measure container position and/or verification container are in transport path (3)
On collimation be suitable for container vertical conveying situation.
3. triggering grating according to claim 1, wherein trigger element (11) are configured to optionally handle shadow shield light
The output signal for the shadow shield (5.1-5.10) that source has been activated.
4. according to the triggering grating described in claim 1 or claim 3, wherein trigger element (11) is configured to regularly surveying
The output signal (A1-A10) that selected shadow shield (5.1-5.10) is judged in the cycle is measured, each measurement period has 1ms most
Long duration, so as to which at least one control signal (TS) is directed to each individually container (2).
5. the triggering grating described in any one in foregoing claim 1-3, wherein trigger element (11) are configured to sentence
Fixed and/or logic merges the output signal (A1-A10) of the shadow shield (5.1-5.10) of selected group, or to produce at least two
The individual control signal (TS) for being directed to single container (2).
6. the distance between the triggering grating, adjacent light source according to any of foregoing claim 1-3 is up to
10mm。
7. the distance between triggering grating according to claim 1, adjacent light source are up to 5mm.
8. according to the triggering grating described in any of foregoing claim 1-3, it has at least one reflector (13), borrowed
Help the reflector (13), by light source transmitting measuring beam (15.1-15.10) can towards the first public shell (9) direction it is inclined
Turn.
9. according to the triggering grating described in any of foregoing claim 1-3, wherein trigger element (11) is configured to, if
At least one corresponding one at least 5% optical attenuation for pointing to shadow shield (5.1-5.10) in output signal (A1-A10), then produce
A raw control signal (TS).
10. the triggering grating according to any of preceding claims 1-3, wherein trigger element (11) are configured to, if
At least one corresponding one at least 25% optical attenuation for pointing to shadow shield (5.1-5.10) in output signal (A1-A10), then produce
A raw control signal (TS).
11. according to the triggering grating described in any of foregoing claim 1-3, wherein light source is arranged to, in past container (2)
Conveying direction (3') deviate.
12. the collimation of position (P) and/or verification container (2) that one kind is used to determine container (2) on a transport path (3)
Method, its triggering grating (1,21,31) described in using any one in foregoing claim 1-3, and with following
Step：
A) convey, be suitably for the vertical conveying of the container by triggering grating；
B) the individually startup and reading of the selectivity of shadow shield (5.1-5.10), and the selectivity of its output signal (A1-A10)
Judge, to determine the measure optical attenuation grade in an at least specified altitude region (H1-H3) for transport path；
C) the contrast of the optical attenuation grade of measure, at least one reduced value, and produced according to the contrast and point to independent container
Control signal (TS)；
Wherein described trigger element (11) regularly judges the output of the selected shadow shield (5.1-5.10) in measurement period
Signal (A1-A10), each measurement period have 2ms maximum length in time, for reading and judging what is be alternatively activated
All output signals (A1-A10) of shadow shield.
13. according to the method for claim 12, wherein height region (H1-H3) is the Container Type according to a conveying
The size and/or shape of (2.1,2.2) provides.
14. according to the method described in claim 12 or claim 13, wherein at least two height regions (H1-H3)
The value of optical attenuation grade is compared and/or carried out each other logical process, so as to identify a Container Type (2.1,2.2) and/or
Distinguish the one of container (2) and correctly convey direction (L2) and incorrect conveying towards (L1, L3).
15. according to the interruption and release of the method described in claim 12 or claim 13, wherein shadow shield (5.1-5.10)
Time point measure at least two height regions (H1-H3) and calculate jointly, so as to determine a reference point of container (2),
The position of one plane of reference and/or main shaft (P).
16. the method described in any one in claim 12-13, wherein output signal (A1-A10) are pointed to high by group
Region (H1-H3) is spent to judge, to pass through the horizontal parameter for determining following container (2) of the optical attenuation in region at various height
At least two：Highly, the conveying of the position in product production line (P), feature contour, peripheral diameter and vertical/topple over
Towards (L2, L1).
17. according to the method described in one of which in claim 12-13, wherein, control signal (TS) basis has measured in addition
Have and characteristically correspond to the displacement increment of transport path (3) to produce.
18. the method according to one of which in claim 12, wherein, control signal (TS) has according to what is measured in addition
Characteristically correspond to one container position of measure (P) and/or the displacement increment of a container diameter produces.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011083757.4 | 2011-09-29 | ||
| DE102011083757A DE102011083757A1 (en) | 2011-09-29 | 2011-09-29 | Trigger light grid and method for determining the position of containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103033850A CN103033850A (en) | 2013-04-10 |
| CN103033850B true CN103033850B (en) | 2017-12-19 |
Family
ID=46581761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210379905.5A Expired - Fee Related CN103033850B (en) | 2011-09-29 | 2012-09-29 | Trigger grating and the method for determining container position |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8867045B2 (en) |
| EP (1) | EP2574964A3 (en) |
| CN (1) | CN103033850B (en) |
| DE (1) | DE102011083757A1 (en) |
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| DE102014220598B4 (en) * | 2014-10-10 | 2023-07-13 | Krones Aktiengesellschaft | Inspection device and method for transmitted light inspection of containers |
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| DE102016105683A1 (en) * | 2016-03-29 | 2017-10-05 | Andreas Hettich Gmbh & Co. Kg | conveyor |
| SE539900C2 (en) * | 2016-04-01 | 2018-01-09 | Plockmatic Int Ab | Device for feeding papers |
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| CN106969709B (en) * | 2017-05-03 | 2022-11-01 | 温州职业技术学院 | Detection apparatus for automatic kludge of blood taking needle |
| DE102018107689A1 (en) | 2018-03-29 | 2019-10-02 | Krones Ag | Method and device for inspecting containers |
| EP3830003B1 (en) | 2018-07-27 | 2023-09-27 | The Heil Co. | Refuse contamination analysis |
| WO2020068277A2 (en) * | 2018-08-06 | 2020-04-02 | Sensormetrix | Optical systems and devices for ballistic parameter measurements |
| CN109598999B (en) * | 2018-12-18 | 2020-10-30 | 济南大学 | Virtual experiment container capable of intelligently sensing toppling behaviors of user |
| EP3899186A4 (en) | 2018-12-21 | 2022-10-05 | Rytec Corporation | Safety system and method for overhead roll-up doors |
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| CN112179287B (en) * | 2020-08-19 | 2022-01-11 | 成都飞机工业（集团）有限责任公司 | Multi-view light source-based rapid measurement device and measurement method |
| CN112461138B (en) * | 2020-11-18 | 2022-06-28 | 苏州迈之升电子科技有限公司 | Cross scanning measurement method, measurement grating and application thereof |
| DE102022114578A1 (en) * | 2022-06-09 | 2023-12-14 | Krones Aktiengesellschaft | Device for checking the filling level of filled containers |
| CN115985432B (en) * | 2023-03-20 | 2023-07-07 | 江西迪安华星医学检验实验室有限公司 | Comprehensive management method and system for cell culture laboratory |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102011083757A1 (en) | 2013-04-04 |
| EP2574964A2 (en) | 2013-04-03 |
| US8867045B2 (en) | 2014-10-21 |
| US20130083330A1 (en) | 2013-04-04 |
| EP2574964A3 (en) | 2017-04-26 |
| CN103033850A (en) | 2013-04-10 |
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